Table of Contents
What do you call the genotype PP?
There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive). All three have different genotypes but the first two have the same phenotype (purple) as distinct from the third (white).
Why do the genotypes pp pp pp all have the same phenotype?
The combinations PP, Pp, and pP have the same phenotype-purple flowers. This is because each contains at least one dominant allele (P). Each parent has two alleles for each gene. When these alleles are different, as in Pp, offspring are equally likely to receive either allele.
What is the phenotype for PP?
P is dominant to p, so offspring with either the PP or Pp genotype will have the purple-flower phenotype. Only offspring with the pp genotype will have the white-flower phenotype.
How can genotypes be written?
The genotype is often written as YY or yy, for which each letter represents one of the two alleles in the genotype. Capital letters represent dominant alleles and lowercase letters represent recessive alleles. The phenotypic ratios are the ratios of visible characteristics.
Can AA genotype marry AA?
Compatible genotypes for marriage are: AA marries an AA. That’s the best compatible. That way you save your future children the worry about genotype compatibility. And definitely, SS and SS must not marry since there’s absolutely no chance of escaping having a child with the sickle cell disease.
Is AA a genotype?
What is a Genotype? There are four hemoglobin genotypes (hemoglobin pairs/formations) in humans: AA, AS, SS and AC (uncommon). SS and AC are the abnormal genotypes or the sickle cells. We all have a specific pair of these hemoglobin in our blood which we inherited from both parents.
What are three exceptions to Mendel’s observations?
The three exceptions to Mendel’s observations are codominance, incomplete dominance and pleiotropy. Further reading: DNA Polymerase.
Is AA heterozygous or homozygous?
Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous.
Is PP purple or white?
the allele P (purple) is dominant. this means that if there are one or more alleles present in the genotype of the offspring (Pp or PP), the flower will be purple. the flower can only be white if there are two recessive genes – if the flower were white, the genotype would have to be pp.
What is difference between genotype and phenotype?
The sum of an organism’s observable characteristics is their phenotype. A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism’s parents, the phenotype is not. Whilst a phenotype is influenced the genotype, genotype does not equal phenotype.
What is a genotype example?
Genotype can also refer to a gene or set of genes that leads to a single trait or disease. For example, if your MC1R gene leads to you having red hair, then you have the genotype for red hair. Humans are diploid organisms, which means you have two copies of each chromosome—one from each parent.
What are phenotypes that are possible for PP?
You can cross between PP×PP type of genotypes. Both are pure and dominant traits. You’ll get all the offsprings of PP from this type of cross. 2. One pure dominant trait and other one hybrid dominant
What does a capital letter mean in a phenotype?
In the notation used, a capital letter means a dominant allele – therefore the presence of a P (in either PP or Pp) means the organism will display the trait P creates. pp? pp What are the results of a cross between parents with genotypes Pp and pp?
What are the genotypes and phenotypes of offspring?
The genotype of the offspring will be a combination of the genes inherited from both parents. Phenotype is how the genes are expressed. The expression of genes is rather complex, it is not quite as simple as the example I am going to provide.
Which is the easiest phenotype to think about?
Think about the possibilities for each phenotype. The easiest is the ry phenotype because it can only be produced by the genotype that has rryy. Ry has two possibilities: RRyy or Rryy. The same is true for rY – two possibilities, which are rrYY and rrYy.